Answer: ventilator

AnswerCrossword Clue
VENTILATORAir circulator
VENTILATORHeating system device.
VENTILATORContrivance bringing fresh air
ventilatorone that ventilates
ventilatorAn appliance for artificial respiration; a respirator
ventilatorAn appliance or aperture for ventilating a room or other space